The Spectrum Application (RF Measurements)
R&S
®
FPL1000
119
User Manual 1178.3370.02 ─ 09
Remote command:
LAY:ADD? '1',RIGH, RSUM
, see
Spectrogram
A spectrogram shows how the spectral density of a signal varies over time. The x-axis
shows the frequency or sweep time, the y-axis shows the measurement time. A third
dimension, the power level, is indicated by different colors. Thus you can see how the
strength of the signal varies over time for different frequencies.
The spectrogram display consists of two diagrams: the standard spectrum result dis-
play (upper diagram) and the spectrogram result display (lower diagram).
For details see
Chapter 7.10.2.1, "Working with Spectrograms"
Remote command:
LAY:ADD? '1',RIGH, SGR
, see
7.2.3
Power Sweep Measurements
For a power sweep measurement, the internal generator signal remains at a fixed fre-
quency, but increases its power level within a specified range over time. The default
frequency of the internal generator is coupled to the (center) frequency of the analyzer
and can be set from 5
kHz to the maximum frequency of the R&S
FPL1000. However,
you can define an offset for the internal generator frequency.
As a result, the measured power levels at the RF input are displayed versus the provi-
ded power levels of the internal generator output.
Measurements and Results
